Molecular phylogeny of Eastern Pacific porcelain crabs, genera Petrolisthes and Pachycheles, based on the mtDNA 16S rDNA sequence: phylogeographic and systematic implications

Molecular Phylogenetics and Evolution
J H Stillman, C A Reeb

Abstract

Porcelain crabs, genera Petrolisthes and Pachycheles, are diverse and abundant members of the eastern Pacific near-shore decapod crustacean community. Morphology-based taxonomic analyses of these crabs have determined groupings of affiliated species, but phylogenetic relationships remain unknown. We used sequence data from the mitochondrial 16S rRNA gene of 46 species of eastern Pacific porcelain crabs to perform phylogenetic analyses by distance and parsimony methods. Our results are used to compare the taxonomic significance of morphological and molecular characters, to examine sequence divergence rates of crab 16S rRNA genes, and to analyze the phylogeographic history of these crabs. Our phylogenetic trees indicate that the genus Petrolisthes is divided into two main clades, reflecting morphological features. One clade contains primarily tropical species, and the other contains species from throughout the eastern Pacific, as well as species in the genera Allopetrolisthes and Liopetrolisthes. Phylogenetic trees of Pachycheles suggest an antitropical distribution; north and south temperate species form one clade and tropical species form a second clade. Sequence divergence rates of the 16S rRNA gene from three pairs of geminat...Continue Reading

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Citations

Dec 1, 2008·Integrative and Comparative Biology·Jonathon H StillmanNora B Terwilliger
Feb 23, 2010·PloS One·Abderrahmane TagmountJonathon H Stillman
Jan 13, 2012·Physiological and Biochemical Zoology : PBZ·Nathan A Miller, Jonathon H Stillman
Jun 8, 2012·Evolution; International Journal of Organic Evolution·Patricia CabezasAnnie Machordom
Aug 27, 2013·Molecular Phylogenetics and Evolution·Michael KornAnna K Hundsdoerfer
Mar 12, 2004·Molecular Phylogenetics and Evolution·Cheryl L MorrisonJ Emmett Duffy
Dec 4, 2019·Molecular Ecology·Alexandra Hiller, Harilaos A Lessios
Jun 15, 2017·Scientific Reports·Alexandra Hiller, Harilaos A Lessios

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